| A | B |
|---|
| gymnosperms | naked seeds (255) |
| angiosperms | seeds enclosed inside a fruit (256) |
| monocots | one seed leaf inside (259) |
| dicots | two seed leaves inside (259) |
| xylem | transports water up from the roots of a plant (260) |
| phloem | moves food from leaves and stems in a plant (260) |
| cambium | produces new xylem and phloem cells (260) |
| stomata | small pores in the leaf surface (261) |
| guard cells | open and closes stomata (261) |
| ovules | develops egg cells in a plant (262) |
| pollen grains | contains sperm (263) |
| stamen | the male reproductive organ of the flower (264) |
| pistil | the female reproductive organ of a flower (264) |
| ovary | the swollen base of the pistil where the ovules are formed (264) |
| pollination | the transfer of pollen grains from the stamen to ovules (264) |
| acid rain | very harmful to organisms that live in water (268) |
